Stuxnet’s Finnish-Chinese Connection – The Firewall – the world of security – Forbes.

While we may never know for sure the originator of Stuxnet, Jeffrey Carr presents a credible, if circumstantial, alternative originator to the common assumption of Israel or the United States – the People’s Republic of China (PRC) – for the following reasons:

• Vacon’s frequency converters are manufactured in Suzhou China.
• In March, 2009, Chinese Customs arrested two Vacon employees.
• The genuine digital certificates used by Stuxnet where stolen from RealTek Semiconductor, a Taiwanese company with a subsidiary in Suzhou, China.
• China has direct access to Windows source code.

The article also discusses what China’s motives might be. You definitely want to read the whole article as well as Carr’s whitepaper.